Optical wavelength conversion element and method of manufacturing the same

Abstract

An optical wavelength conversion element is formed of a ferroelectric material which has a nonlinear optical effect, and is provided with periodic domain reversals arranged in one direction and converts the wavelength of a fundamental wave impinging thereupon in the direction in which the periodic domain reversals are arranged. The ferroelectric material is LiNb x Ta 1-x O 3 (0≦×≦1) doped with at least one of Zn, Sc and In.

What is claimed is: 
     
       1. An optical wavelength conversion element comprising a ferroelectric material which has a nonlinear optical effect, is provided with periodic domain reversals arranged in one direction and converts a wavelength of a fundamental wave impinging thereupon in a direction in which the periodic domain reversals are arranged, wherein said ferroelectric material is LiNb x  Ta 1-x  O 3  (0≦×≦1) doped with at least one of Zn, Sc and In.   
     
     
       2. A method of manufacturing an optical wavelength conversion element comprising the step of forming periodic domain reversals on a single domain ferroelectric material having a nonlinear optical effect by applying electric fields to the ferroelectric material through periodic electrodes formed in a predetermined pattern, wherein the ferroelectric material is LiNb x  Ta 1-x  O 3  (0≦×≦1) doped with at least one of Zn, Sc and In.